# NTSB OAK69D0171: Bell 206A, N6255N, Hanapepe, HI, November 2, 1968

- Type: NTSB accident investigation
- Classification: Accident · No injuries · Closed
- Date: November 2, 1968
- Place: Hanapepe, HI · HANAPEPE, HI
- Location: 21.9146° N, 159.5860° W: Placed by OpenAirDocs: center of Hanapepe, HI, within about 6 miles (OpenAirDocs)
- Nearby events: https://openairdocs.org/map.md?lat=21.9146&lon=-159.5860&mi=10
- Phase of flight: [Enroute](https://openairdocs.org/ntsb-phases/400) (OpenAirDocs' grouping)
- Highest injury: No injuries
- Injuries: 5 uninjured
- Status: Completed, report January 28, 1969
- Report: Brief approved by the director
- NTSB case key (mKey): 107620
- NTSB case page: https://web.ntsb.gov/investigations/?ntsbnumber=OAK69D0171
- Page: https://openairdocs.org/ntsb/OAK69D0171

## NTSB brief

```
----------------------------------------------------------------------------------------------------------------------------
 FILE    DATE          LOCATION          AIRCRAFT DATA       INJURIES       FLIGHT                        PILOT DATA
                                                               F  S M/N     PURPOSE
----------------------------------------------------------------------------------------------------------------------------
3-4205   68/11/2   HANAPEPE,HAWAII     BELL 206A           CR-  0  0  1  COMMERCIAL                COMMERCIAL, AGE 25, 2071
        TIME - 1050                    N6255N              PX-  0  0  4  AIR TAXI-PASSG            TOTAL HOURS, 276 IN TYPE,
                                       DAMAGE-SUBSTANTIAL  OT-  0  0  0                            NOT INSTRUMENT RATED.
        NAME OF AIRPORT - PORT ALLEN
        TYPE OF ACCIDENT                                         PHASE OF OPERATION
           ENGINE FAILURE OR MALFUNCTION                            IN FLIGHT: NORMAL CRUISE
           HARD LANDING                                             LANDING: POWER-OFF AUTOROTATIVE LANDING
        PROBABLE CAUSE(S)
           POWERPLANT - TURBINE ASSEMBLY: BEARING,SHAFT
           MISCELLANEOUS ACTS,CONDITIONS - MATERIAL FAILURE
           POWERPLANT - LUBRICATING SYSTEM: PUMP,SCAVENGE
           MISCELLANEOUS ACTS,CONDITIONS - OIL STARVATION
           TERRAIN - ROUGH/UNEVEN
        EMERGENCY CIRCUMSTANCES - FORCED LANDING OFF AIRPORT ON LAND
        REMARKS- NO 7 BEARING SEPARATOR FAILED,PIECES WENT INTO SCAVENGE PUMP,PUMP FAILED,ENG SEIZED.
```

## Aircraft

- Registration: [N6255N](https://openairdocs.org/deregistered/N6255N-2025-09-15), registration cancelled 2025-09-15, S/N 129, built 1968 (OpenAirDocs)
- Reported make and model: BELL 206A
- Registry model: [Bell 206A](https://openairdocs.org/model/bell-206a) (registry code 1181508) (OpenAirDocs)
- Registry engine: [Allison 250 SER 250HP](https://openairdocs.org/engine/allison-250-ser-250hp) (registry code 03002, turbo-shaft) (OpenAirDocs)
- Category: Helicopter
- Engines: turbo shaft
- Damage: Substantial damage
- Airport: Port Allen

## Other investigations on N6255N (1)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB WPR25LA078](https://openairdocs.org/ntsb/WPR25LA078), Jan 14, 2025: Bell 206A (N6255N), Lemoore, CA, destroyed. Probable cause: The pilot’s failure to maintain clearance from power lines while maneuvering at a low altitude.

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

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